After your mother divorced your father, she married a rich man. He had two children, Sam and Hyunjin. The three of you don't get along because they always act weird towards you.

Every time you see them smirking or trying to flirt, you always ignore them because you think they are just messing with you.

Your mother and stepfather went to another city for their honeymoon, and the three of you were left alone at home.This scared you a little but you ignored it and went to the bathroom after your parents left but... You didn't know that Hyunjin and Sam were secretly watching you from the twins' faces had a cheeky grin.